Mixing device



May 23, 1933.

G. D. MOORE ET AL MIXING DEVICE Filed Sept. 21, 1951 9 a +92 7 1 J J mid F I 3 a 3. 2 0 2 Q w i WA 0 J Zr 5 wmw 2 0 m A 0a w zz F J rk 23 v 31 3 m J, I a W w wN 10 9 m UNITED STATES Patented May 23, 1933 PATENT OFF C ononen endow Ann JAMES F. BEAUMONT, or wononsrnn, AssAoHusnrrs MIXING DEVICE Application filed September 21, 1931. serial 110.563,!184 H The object of this invention is to proyide a device by meansofwhich anYaddif .tional quantity. of air may be added to the air-and-liquid fuel mixture produced by the 5 carburetor of an 111113111211@lOfIIbllQtlOll e llglne.

In additionto providing more air, means 1 1s provided for regulating this supply oiaddltlonal an as may be desired by the opcrater. Thus,atidling, the supplementary a11- supply 18 cutofii, asthere is no call tor thissupplementary air supply is also in;

. creased, proportionately to the extent to which the throttle isopened, bymeans of 5 a mechanism" communicating with the arm, or lever, operating the throttle. Once this mechanismis secured in its proper position, it functions as a part of the throttle itself.

Qther objects and advantages of thein-* i Fig. 1 is a front elevation of a carburet- J or showingla preferred embodimentof the inventionlin closed position;

1 F'g. 2-is a plan oftheattachment, showing the valves closed;

F ig.,3 is a section onthelli11e3-3 ofFig.

36' 'nilh wing the parts; in operating position,

1 Fig. asectional View on the l1ne 1-4 The addition otsupplementary air to the 1f carburetor-mixture of air and fuel, has a very marked effect upon the intimacy of the final-'air-a1 '1d-fuel mixture delivered to the engine cylinders. In this COllDQCtlOD-lt 1s apparent that, to obtanrthe most lntimate,

complete and efficiently functioning mixture andfuel gstream coming from theQc-arburet- 1 1' or, insuch manner that an intimate mixturethe top edge of this outer conduit 17 is otairnandfuel, no promiscuous addition of the supplementaryan .w1llsuflicen The aux ili'ary a1r jn 1ust,be untroduced into the a1rof the space 21. V

terial and, of suflicient length to project at, each end from the opening 24. Atone end aconduitl? extendsirom the platesur rounding the first-named opening. conduit 17 extends into the manifold, thus constituting meansby which the air-and? 1 fuel mixturepasses from th'egcarburetor into the intake manifold. ,The plate is counter- Sunk at 15 to receive theflange 16 o13an inner cylinder 18 which extends upward from the plate into the conduit 17, The inner or lining cylinder 18 is of smaller diam eter than the outer cylinder 17. They are separated from one anotherby a narrow an nular space 19 and the outer conduit extends a short distance beyond the inner one. On

narrow annular flange 20 extending inward- .ly and slightly overlapping the top edge of the inner cylinder 18, leaving a narrow space 21 between the bottom of the flange 20 and thetop edge of the conduit 18. 1 V r a T In one wall of the plate 10 areopenings orports 22 and 23 which pass through the plate in the direction indicated and open intothe space between the two cylinders.

i From this construction it is evident that air entering theopenings .22 and 23 by' the sue-j tion of the engine, will be drawn upthrough the area between the cylinders and .discharged through the space between the top of the inner cylinder and the overlapping flange on the top of the outer-cylinder Two suchqopenings are shown and these enter the space between the cylinders at po-; sitions opposite each, other, so as to provide an equ al supply ofair at each'of these points.. Obviously the number of these ports, and their it corresponding extensions may be increased atwill to insurethat an;

even air supplywill be provided at all parts 56 For the purpose ofregulating the aux il iary air supply entering through the ports or openings 22 and 23 another opening? 2 1 is provided, extending longitudinally through an extension 25 of the plate 10 and passing at right angles through the openings 22and 23. In this opening 24 is u a valve rod 26;of 1netal or other suitable macylinder of the conduit.

ator is further depressed so that'the car this rod is prolonged and provided with an adjustable stop 28. At the other end there is a head 29 and under it on the rod a spring 30. This rod is provided with two reduced portions 31 and 32, each one adapted to come into communication with one of the ports and thus allow the outer air to pass through.

The head 29 is employed in manipulating this double valve. On the plate 10 is mounteda shaft or rod 33 having an arm 34 projecting therefrom and also a cam for engaging the head 29 of the valve rod. From the arm 34 extends a link 36 which in turn is connected with the accelerator of the car. I

.VVhen the accelerator is not in operation the parts are in the position shown in Figs. 1 and 2' and the valve rod closes both the ports or openings 22 and. 23. Therefore while the engine is stopped, and also while it is idling, no air is admitted through these openings and the carburetor works in the ordinary way.

Now when the accelerator is depressed there will be no effective action for a short space of time, although the valve rod continues to move to the right as shown in Fig. 3 under the influence of the spring. However, when it is sufficiently opened the valve rod 26 has moved far enough so that its reduced portion 31 comes into registration with. the port22 and air is admitted into the space 19 between the inner and outer When the accelerreally going at a good speed,this port remains open and also'the port 23 is opened in 'thesame way, thus admitting more air. After once completely opening, further depression of-the accelerator will never close these ports. Thus when the engine needs additional 'air,it will get'it by this simple means;

I In operatiomthe air enteringthrough the openings '22 and 23 ascends at a high velocity' through the space 19 and is discharged into the air-and-fuel stream through the space 21. Apart of this air strikes against the under side of the flange 20 and is deflected into the air-and-fuel stream issuing from the carburetor. An-

other-portion of the-air drawn over the top edgeof the inner cyllnder into the as cending' air-and-fu'el stream. The outer The net result 23 fully open;

In this way a very simple device is provided for supplying the engine in the flow of fuel mixture with additional air at the times when it has need for it and not at any other time.

Although we have illustrated and described only one form-of the invention, we are aware of the fact that modifications can be made therein by any person skilled in the art without departing from the scope of. the invention as expressed in the claims. 'lherefore, we do not wish to be limited to the exact form shown, but what we do claim is:

1. 'An' attachment for a carburetor comprising a conduit extending from the carburetor into the intake manifold, said conduit having an annular transverse flat flange at the end thereof extending inwardly substantially at right angles with the axis of said conduit, a lining for the conduit spaced inwardly from the wall thereof and extending at the end nearly but not quite to said flange, and means for introducing external air into the conduit'behind the lining,

whereby'theflange will project the air current radially inwardly into thev air-andfuel streamand force the air to be mixed with the fuel mixture passing through the conduit. i

2. An attachmentfor a carburetor comprising a plate at the discharge end thereof, said plate having a conduit extending from the carburetor into the intake manifold, said conduit having an annular plane flange at the end thereof extending inwardly, a lining for the conduit spaced from the wall thereof and extending at its end nearly to said flange and means for introducing external air throughsaidplate into the conduit behind the lining, whereby the air cur rent will be directed into the current of air and gas. mixture radially from all points around the circumference of said conduit.

3. An attachment for a carburetor comprising a plate at 'the discharge end thereof, said plate having aconduitextending from the carburetor into the intake manifold, said conduit having an annular plane flange at the end thereof extending inwardly substantially at right angles to the direction of the air and gas mixture along the conduit, a lining for the conduit spaced from ,the wall thereof and extending at its end nearly to said flange, means for introducing external air through said plate into the conduit behind the lining, and means for regulating the amount of air introduced.

In testimony whereof We have hereunto afiixed. our signatures.

GEORGE D. MOORE. JAMES F. BEAUMONT. 

